F 
 
 
 A 18 
 
BANCROFT 
 LIBRARY 
 
 4- 
 
 THE LIBRARY 
 
 OF 
 
 THE UNIVERSITY 
 OF CALIFORNIA 
 
STATEMENT 
 
 OF THE 
 
 Capital, $2,OOO,OOO. 
 
 SAYLES J. BOWEN, President. 
 
 EDMUND G. ROSS, Vice-President. 
 
 THOMAS T. CRITTENDEN, Secretary and Counsel. 
 
 ALFRED B. MULLETT, Treasurer. 
 
 CHARLES A. FORSYTH, Superintendent. 
 
 TRUSTEES: 
 
 SAYLES -I. BOWEX. THOMAS AXTISELL, 
 
 ALPHEUS S. WILLIAMS, ED.MCXD G. ROSS, 
 CHARLES H. PAKSOXS, THOS. T. CRITTENDEX, 
 
 ALFRED B. MULLETT, STEPHEN K. KANE, 
 
 WILLIAM THORPE. 
 
 OFFICE OF THE COMPANY: 
 
 o. 32-Jr, 41 Street, Washington. 
 
 WASHINGTON : 
 H. POLKINHORN & CO., PRINTERS. 
 
STATEMENT 
 
 OF THE 
 
 Capital, $2,OOO,OOO. 
 
 SAYLES J. BOWEN, President. 
 
 EDMUND G. ROSS, Vice-President. 
 
 THOMAS T. CRITTENDEN, Secretary and Counsel 
 
 ALFRED B. MULLETT, Treasurer. 
 
 CHARLES A. FORSTTH, Superintendent. 
 
 TRUSTEES: 
 
 SAYLES J. BOWEN, THOMAS ANTISELL, 
 
 ALPliEUS S. WILLIAMS, EDMUND G. ROSS, 
 CHARLES H. PARSONS, THOS. T. CRITTENDEN, 
 ALFRED B. MULLETT, STEPHEN K. KANE, 
 
 WILLIAM THORPE. 
 
 OFFICE OF THE COMPANY : 
 
 No. 324, 4i- Street, Washington. 
 
 WASHINGTON : 
 H. POLKINHORN & CO., PRINTERS. 
 
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 The American Mining Company was incorporated un- 
 der the laws of Colorado Territory, February 24, 1870, for 
 the purpose of mining and reducing silver ores. 
 
 The capital stock is $2,000,000, divided into shares of 
 $100 each. The entire stock of this Company is full paid, 
 and by the laws of Colorado free from all assessment in 
 future. 
 
 The office of the Company is at No. 324 Four-and-a-half 
 Street, Washington, D. C. 
 
 The Company has -purchased, and holds a perfect title, 
 in fee simple, to ten rich and extensive silver mines, or 
 lodes, upon Griffith Mountain, Georgetown, Colorado. 
 Upon each lode one or more shafts have been sunk to a 
 sufficient depth to show that they are true fissure veins, 
 and extend downwards to an indefinite depth; and that 
 the deeper they are worked the richer and wider they 
 become. 
 
 The lodes run parallel with each other, at various dis- 
 tances apart, the first being some 450 feet from a branch 
 of Clear Creek, and the last being about 1000 feet from 
 
the crown of Griffith Mountain. The following is a list 
 of the lodes of the Company : 
 
 LODE. 
 
 Length. 
 Feet. 
 
 Width. 
 Feet. 
 
 Shaft. 
 Feet. 
 
 
 1400 
 
 8 
 
 30 
 
 Bedford 
 
 1400 
 
 5 
 
 25 
 
 
 1400 
 
 6 
 
 25 
 
 
 1400 
 
 8 
 
 35 
 
 
 1400 
 
 7 
 
 20 
 
 
 1400 
 
 5 
 
 15 
 
 *0neida 
 
 1400 
 
 6 
 
 25 
 
 
 1400 
 
 8 
 
 15 
 
 
 1400 
 
 5 
 
 20 
 
 JEgean 
 
 1400 
 
 7 
 
 15 
 
 
 
 
 
 The ores heretofore taken from these mines are silver 
 glance, sulphuret of silver, and argentiferous galena. The 
 country rock is generally a coarse-grained granite. The 
 ores yield generally $200 to $500 per ton, and large 
 quantities have been taken out which yield $800 to $1000 
 per ton. 
 
 Griffith Mountain is very high and precipitous, rising, 
 within a distance of five thousand feet, to an altitude of 
 four thousand feet above the waters of the Creek. To 
 work these mines by means of shafts would, therefore, be 
 an expensive process, on account of the labor required to 
 raise the ores from deep shafts, to construct and keep in 
 operation the machinery required to keep the mines free 
 from water, and to carry the ores down the mountain side. 
 To avoid these objections the Company has secured a large 
 tract of land at the base of the mountain, and has com- 
 menced driving two mining tunnels, 8 by 7 feet, into the 
 mountain so as to strike their lodes at right angles on a 
 level with the ground. By means of these tunnels very 
 important advantages are gained : 1st. The expense of 
 hoisting is saved ; 2d. The mines become self draining, and 
 the use of costly pumping engines is obviated ; 3d. Trans- 
 
 *Extension of the Federal Lode. 
 
portation from the mines to the mills is greatly reduced; 4th. 
 The mines are worked at greater depths, where the ore is 
 much richer, and the lodes wider, than nearer the surface ; 
 5th. New lodes are discovered, which do not show on the 
 surface, thus increasing materially the value of the Com- 
 pany's property experience having demonstrated that the 
 country is full of ."blind lodes," equal in extent and rich- 
 ness to the best. 
 
 This Company, in opening up its tunnels, found two 
 "blind lodes," covered by the debris which had worked 
 down the mountain side. One of these lodes contains 
 over two feet of mineral -bearing quartz, and is of consid- 
 erable value. It is believed that many more such lodes 
 will be developed as the tunnels progress, and that in this 
 way the Company's property will eventually be doubled 
 in extent. 
 
 The property of the American Mining Company is ad- 
 vantageously situated, being on the banks of Clear Creek, 
 opposite the extensive works of the Stewart Silver Ke- 
 ducing Company, within the city limits of Georgetown, 
 45 miles from Denver, with which it is connected by a first 
 class stage road. Denver is the terminus of the Kansas 
 Pacific Railroad, now nearly completed. Georgetown is 
 connected by telegraph with all parts of the country, and 
 is as accessible as were the coal mines of Pennsylvania 
 ten years ago. It is a growing town, and daily becom- 
 ing more important. All the mines are in a flourish- 
 ing condition, and those of two years old and over are 
 paying considerable dividends. Mining there is a legiti- 
 mate business, steadily pursued without fluctuation or 
 speculation. 
 
 Adjoining the mines of the American Company, on the 
 north, are two of the richest silver mines now being 
 worked in any country. They are the Anglo-Saxon and 
 the^Federal. The following statement of the actual work- 
 
6 
 
 ings of the latter by a small force of men is furnished by 
 GEORGE H. BARRETT, Esq., of Georgetown, under whose 
 direction the work was carried on : 
 
 GEORGETOWN, COL., Nov., 1869. 
 THE FEDERAL LODE ACCOUNT, CR. 
 
 By 1711 Ibs. ore sold (coin) $647 27 
 
 1972 " " " 1,715 03 
 
 7000 " " " 403 00 
 
 2280 " " " 548 34 
 
 3000 " 2d class " 15000 
 
 42 Ibs. ore run in small buttons 100 00 
 
 Total (coin) $3,563 64 
 
 Add 25 per cent, premium on coin 840 91 
 
 $4,404 55 
 
 THE FEDERAL LODE ACCOUNT, DR. 
 
 To 26 days' work in August, @ $4 $104 00 
 
 63 " September 25200 
 
 61i " October 246 00 
 
 Packing ore down from mine 90 00 
 
 $692 00 
 
 Net profit $3,712 55 
 
 In the foregoing there are two classes of ore first class, 
 varying in value from about $400 to $1,500 per ton ; and 
 second class, varying from $100 to $400 per ton. The 
 American Company owns a portion of the Federal Lode, 
 and will reach it by the tunnel, some 2,000 feet from its 
 mouth. The Anglo-Saxon Lode, which also crosses the 
 American property, is of the same character as the Fed- 
 eral. The Anderson Lode, belonging to this Company, 
 yields ores worth $800 to $1,000 per ton. In fact, all the 
 lodes on Griffith Mountain yield ores of a high grade. 
 Extensive mining operations are being carried on all 
 around the American Company with great success. Some 
 of the mines are now worked at considerable depth by 
 shafts, and all experience proves the greater the depth the 
 richer the ores. 
 
 The American Mining Company's tunnels will run 
 through other celebrated lodes which have been worked 
 on adjoining property for two or three years, and have 
 been found to yield ores worth about $500 per ton, in 
 
large quantities. Among these may be named the Magnet, 
 the Comet, the Griffith, the Cram Extension, and the 
 Summit. 
 
 Mining by tunnels is the almost universal practice at 
 Georgetown now. The following is a list of the principal 
 mines now being worked there successfully: 
 
 Brown Silver Mining Company of Philadelphia ; George H. Christian, 
 President. 
 
 Terrible Mining Company of Georgetown, Col. ; Crow & Clark, pro- 
 prietors. 
 
 Baltimore Mining Company of Baltimore; W. Helmick, (Washington,) 
 President. 
 
 Trenton Mining Company of Trenton, N. J. 
 
 Morris Mining Company of Washington, D. C.; James A. Magruder, 
 President. 
 
 Helmick Silver Mining Company, Washington ; Flodoardo Howard, 
 President. 
 
 Wilson & Cass Mining and Smelting Company, New York. 
 
 Equator Mining Company of Chicago. 
 
 Some of these mines are paying dividends ranging from 
 15 to 100 per cent, per annum, and the balance are push- 
 ing their operations with a view of doing the same thing 
 within the year. 
 
 Some idea of the extent and value of the mines belong- 
 ing to the American Mining Company may be formed by 
 a comparison with the silver mines on the ComstockLode, 
 heretofore considered the richest and most extensive in the 
 United States. The following table shows the extent of lode 
 property owned by some of the principal Companies, the 
 value of their ores per ton, and the total amount taken 
 from each mine up to the year 1866 : 
 
 MINE. 
 
 Extent in 
 feet. 
 
 Yield per 
 ton. 
 
 Total Yield. 
 
 
 16 800 
 
 $200 to 500 
 
 
 Chollar Potosi 
 
 1 434 
 
 23 to 25 
 
 $4 000 000 
 
 Ophir 
 
 1 200 
 
 27 to 45 
 
 q ;AA nnn 
 
 Gould and Curry 
 
 921 
 
 29 
 
 i 9 790 Ann 
 
 Yellow Jacket. 
 
 957 
 
 27 to 35 
 
 9 QAA 000 
 
 Savage 
 
 768 
 
 43 
 
 4 4Q1 AAA 
 
 Crown Point 
 
 540 
 
 33 to 44 
 
 550 000 
 
 
 400 
 
 51 
 
 170 000 
 
 
 
 
 
From the foregoing, compiled from the Report of the 
 IT. S. Commissioner on Mining, it will be seen that the 
 American Company holds more property than is owned 
 by seven of the principal silver mines in the United States 
 combined, and that the ores are of much greater value per 
 ton. The following reports of Prof. HAYDEN, U. S. Geol- 
 ogist, and others, sustain the foregoing assertions : 
 
 From Prof. F. Y. HAYDEN, U. 8. Geologist. 
 
 DEPARTMENT OF THE INTERIOR, 
 Office U. S. Geological Survey, Washington, D. C., Feb. 7, 1870. 
 
 DEAR SIR In reply to your questioirl would say that I am somewhat 
 familiar with the lodes on Griffith and Saxon Mountains, and believe them 
 to be very rich. The Griffith Lode is ranked as first class, and has been 
 throughly tested with success. It is one of the oldest and richest in Col- 
 orado. The ore assays on an average about 150 ounces per ton, and some of 
 the ore assays 800 to 1,000 ounces per ton. There are several other lodes of 
 equal richness on this mountain, but they have not been so thoroughly 
 wrought. 
 
 The Anglo-Saxon Lode for a year or two produced more ore than any 
 other lode in the district. It averages from $800 to $500 per ton. The Comet, 
 Magnet, Federal, &c., are excellent lodes, and have the character of perma- 
 nence. 
 
 The lodes on these mountains have a strike about NE. and SW., orE. by 
 W. , and are nearly vertical; consequently if the mountain is tunneled properly, 
 the tunnel must cut all the lodes in the mountain at right angles. The Brown 
 Mountain is solid massive granite, and is tunneled with great difficulty, while 
 the Leavenworth seems to be so broken up by jointage that it is tunneled 
 with comparative ease. I think the Griffith and Saxon Mountains, if I re- 
 member rightly, can be tunneled easily. It is my impression that these 
 silver mines are very rich, and if wrought in accordance with strict business 
 principles will yield most satisfactory returns. 
 
 Very respectfully, yours, 
 
 F. V. HAYDEN. 
 
 To S. J. BOWEN, Esq., Washington, D. C. 
 
 From the Superintendent of the U. 8. Mint, Denver. 
 
 Hon. S. J. BOWEN, President American Mining Co., Washington, D. C.: 
 
 DEAR SIR Three weeks since I visited Georgetown, Col., and inspected 
 the property of the American Company, on Griffith Mountain. It bears a 
 high reputation for rich ores, which I am satisfied it deserves. The ores 
 on this mountain are principally sulphuret of silver, (sternbergete,) but 
 many of them are zinc blende, galena, iron pyrites, and copper pyrites. In 
 value, the first class ores run from $600 to $1,000 per ton; second class, 
 from $100 to $300, and the average value about $200. I have assayed a 
 
great many specimens of ores from this mountain, which range in value from 
 $500 to $15,000 per ton. 
 
 The mountain is very steep and abrupt, and consequently the true method 
 of working these mines is by tunneling. By this means the mines are drained 
 free of cost, and the expense of working them is greatly reduced. 
 I am, sir, very respectfully, your obedient servant, 
 
 F. SCHIRMER. 
 BALTIMORE, March 15, 1870. 
 
 From the Commissioner of the U. 8. General Land Office. 
 
 DEPARTMENT OF THE INTERIOR, 
 
 General Land Office, Washington, D. C., Feb. 25, 1870. 
 WM. THORPE, Esq., Washington, D. C. : 
 
 SIR In reply to your inquiry of the 4th instant, with regard to the ores 
 on Saxon and Griffith Mountains, Georgetown, Colorado, it affords me 
 pleasure to give you the subjoined particulars: We have specimens in our 
 collection from the following lodes : 
 
 Anglo-Saxon. Native silver, argentiferous galena and stephanite. The 
 native silver predominates over all other metals. 
 
 Griffith Lode. Gold-bearing iron pyrites. Average yield $200 per 
 ton. This is one of the richest lodes in the vicinity of Georgetown. The 
 shaft opening is about half-way up the high hill situated on the right bank 
 of Clear Creek. The wall rock consists of a decomposed mixture of gneiss 
 and quartz porphyry. The dip of the vein is nearly vertical. 
 
 From Federal Lodew have specimens of argentite, or silver glance, yield- 
 ing eighty per cent, of silver by assay. * 
 
 Very respectfully, your obedient servant, 
 
 JOS. S. WILSON, Commissioner. 
 
 From the Territorial Delegates in Congress. 
 
 FORTY-FIRST CONGRESS U. S., 
 
 House of Representatives, Washington, D. C., Feb. 28, 1870. 
 Hon. S. J. BOWEN, President American Mining Co.: 
 
 SIR In answer to your inquiries relative to the property of the above- 
 named Company, on Saxon and Griffith Mountains, near Georgetown, Col- 
 orado ^Territory, I cheerfully say that, although I am not personally fami- 
 liar with the numerous ledges owned by your Company, I can safely say, 
 that after a residence of over two years at Georgetown, actively engaged 
 in mining, that I consider these mountains among, if not, the richest in 
 silver ores of any in this exceedingly rich district. 
 
 A tunnel penetrating these mountains can not, in my opinion, fail to prove 
 an investment that must richly repay the projectors. 
 Your obedient servant, 
 
 S. F. NUCKOLLS, 
 
 Delegate from Wyoming. 
 
10 
 
 Having resided in Colorado for the last ten years, and being well ac- 
 quanted with the mines in the vicinity of Georgetown, I cordially endorse 
 the statements made in the foregoing letter of Hon. S. F. Nuckolls. 
 
 A. A. BRADFORD, 
 
 Delegate for Colorado 
 
 From the Ex- Auditor General of Colorado. 
 
 BALTIMORE, MD., Feb. 28, 1870. 
 
 To Hon. SAYLES J. BOWEN, President American Mining Company: 
 
 DEAR SIR In answer to your inquiries relative to my knowledge of the 
 mines belonging to your Company, near Georgetown, Colorado, I take 
 pleasure in stating that about three months since I had occasion to exam- 
 ine this property, consisting of three tunnels and ten silver ledges or 
 Saxon and Griffith Mountains. 
 
 The extreme richness of the ledges on this mountain is a fact well knowr 
 to all Coloradians, as indeed to many who have only visited the Territory 
 Notwithstanding this, with a residence of several years in Colorado amon 
 her gold and silver mines, I must confess that on the occasion referred to J 
 was more than astonished at the marvelously rich ores that were shown m 
 from many of these ledges ores that, from rude tests, I found yielding 
 from one hundred up to many thousand dollars per ton. 
 
 One large piece of ore, I recollect particularly, contained upwards o 
 $16,000 per ton, and several others upwards of $1,000. The ores, for th< 
 most part, are sulphuret and silver glance; some of the ledges, however 
 producing argentiferous galena in considerable amounts. 
 
 The ledges on this mountain are mostly strong, true fissure veins, varying 
 in width from three and one-half to eight and ten feet. A number o 
 ledges were then being worked by shafts from the surface, and the owners 
 were reaping a rich return, even by this tedious and expensive method. 
 
 You are opening your mines by the only true way i. e., tunneling. B] 
 so doing you will cut most of the ledges at a great depth, and the certair 
 success of your extensive enterprise is only a matter of a few months' time 
 and a sufficient penetration of the mountain. 
 
 I am, respectfully, yours, 
 
 C. R. BISSELL. 
 
 from Rev. W. A. Amsbary, Pastor M. E. Church, George 
 town, Colorado. 
 
 WASHINGTON, D. C., March 1, 1870. 
 To Hon. S. J. BOWEN, President American Mining Company : 
 
 DEAR SIR I have resided in close proximity to the silver mines belong 
 ing to the American Company, at Georgetown, Colorado, for the past thre 
 years, and when I report that your mines are exceedingly rich and valuable 
 and capable of producing hundreds of thousands of dollars annually, I an 
 only stating a fact well known to every silver miner in Georgetown who i 
 acquainted with them. In short, I can say that you are engaged in a grea 
 enterprise, and one that, properly managed, must result in great pecuniar 
 gain. 
 
 WM. A. AMSBARY. 
 
11 
 
 From the Central City Herald. 
 
 The peculiar formation of the mountains around Georgetown suggests 
 the idea of tunneling to the practical miner. They are generally so steep 
 and so high that by tunneling to strike a lode, the vein is struck at nearly 
 as great a depth as could be obtained by sinking a shaft on the vein to the 
 same point. 
 
 The Great American Tunnel is designed to cut Saxon and Griffith Moun- 
 tains. Beginning at a point a little below the mouth of Taylor Gulch, and 
 just opposite the Reduction Works of the Stewart Silver Reducing Co., it 
 will be driven in a course at right angles to the general direction of the 
 lodes. Some of the most valuable mines in Griffith district are situated on 
 those two mountains, and are now being profitably worked. Among 
 others we may mention the Anglo-Saxon, Magnet, Federal, Summit, Com- 
 et, and Griffith. The owners of this tunnel own a number of good_ lodes 
 on those mountains, and it is with a view to the economical working of 
 their own property that the tunnel is projected. From our own personal 
 knowledge of the district, we believe the location of the tunnel to be a good 
 one, and if the project is carried out with energy it cannot but prove a 
 great success. It will require capital and energy to push this great work 
 to completion, however, but we have no fears but what it will be done. 
 
 From Report of U. 8. Geological Survey of Colorado and New 
 Mexico, 1869. 
 
 THE GOLD AND SILVER LODES OF COLORADO. The gold and silver lodes 
 of this Territory, so far as they are observed, are entirely composed of the 
 gneissic and granite rocks, possibly rocks of the age of the Laurentian 
 series of Canada. * * * * * There is an important question which 
 suggests itself to one attempting to study the mines of Colorado, and that 
 is the cause of the wonderful parallelism of the lodes, the greater portion 
 ot them taking one general direction or strike, northeast and southwest. 
 We must at once regard the course as deep-seated and general, for we find 
 that most of the veins or lodes are true fissures, and do not diminish in rich- 
 ness as they are sunk deeper into the earth. All the lodes have more or 
 less clearly-defined walls, and some of them are quite remarkable for their 
 smoothness and regularity.- 
 
 ft ***** * 
 
 I would simply remark that my observations indicate to me that the silver 
 mines of Georgetown are very rich and practically inexhaustible, and that under 
 the present system of working them they are becoming daily more and more 
 important. The amount of labor that is continually expended in opening 
 mines and driving tunnels is immense, and their future importance as a 
 source of wealth to the country greatly increased. * 
 
 There are some remarkably rich lodes, which have yielded the enterpris- 
 ing miners untold wealth, and some that will continue to do so. In the 
 majority of cases, where proper management and economy have been em- 
 ployed, the mines have been a great source of wealth to the miner. It is 
 not necessary to enter into the causes of the wonderful failures and swind- 
 ling operations which have brought Colorado into such disrepute in the past. 
 It is sufficient for me to state my belief that the mining districts of Colorado 
 will yet be regarded as the richest the world has ever known. 
 
 * # * * # * # 
 
 THE GRIFFITH LODE. This lode, like the Gregory, near Central City, is the 
 oldest as well as one of the richest in the vicinity of Georgetown. It is 
 
12 
 
 situated in a high hill or mountain on the right bank of ClearjCreek. The 
 shaft opening is about half way up this hill. The shaft is one hundred and 
 twenty-seven feet deep, from which a drift has been struck fifty feet east, 
 and ten feet west. The dip of the vein is a trifle south, though it is nearly 
 vertical. The crevice averages perhaps four to five feet, and its north wall- 
 rock is a syenite, while the south wall-rock appears to be a weathered gran- 
 ite. Assays show values of from one hundred to seven hundred ounces 
 per ton. The ore will average perhaps one hundred and fifty ounces per 
 ton. The expectation was, when the improvements in progress had been 
 made, to take out fifty tons of ore per diem. Some little trouble was ex- 
 perienced from water in the early spring, but not enough to hamper the 
 efficient working of the mine. 
 
 This company owns twenty-five feet each side of the lode and three'.hun- 
 dren on the lode each side of the discovery shaft. The upper part of the 
 north wall-rock consists of a decomposed, yellowish coarse-grained mixture 
 of gneiss and quartz prophyry, but below it is a hard, compact syenite. I The 
 south wall-rock appears to be, above, a reddish ferruginous weathered^gran- 
 ite, and, below, a white, compact quartz porphyry. 
 
 From Report U. 8. Commissioner of Mining, 1868. 
 
 Silver is found in all the gold mining districts of Colorado, associated 
 with the ores containing gold, in the galena particularly, which is t found at 
 times in considerable quantity. Not until within the last two years was it 
 generally known in Colorado that immense belts of silver veins, separate 
 from the gold*, existed upon the western declivities of the Rocky Mountain 
 range, corresponding in their direction and general^features with those of 
 gold upon the eastern side. The prevailing great richness in silver in the 
 ores of Griffith and Argentine Districts, in Clear Creek County, upon the 
 head waters of South Clear Creek, some thirteen miles distant from the 
 towns of Central and Black Hawk, and correspondingly near to the snowy 
 peaks of the range, first attracted particular attention to the element of 
 silver. In these districts silver ores of great richness have been discovered, 
 masses being exhibited at the Paris Exposition from the Baker Lode, of 
 Argentine District, and of the Elijah Hise and Endigo Lodes, of Griffith 
 District, which assay respectively, in silver alone, $532.12, 1,656.20, and 
 $1,804.83 to the ton of 2,000 pounds of ore. 
 
 From thirty assays made by Fred. Eckfeldt, melter and refiner at the 
 United States branch mint at Denver, an average assay was obtained of 
 $130.28 to the ton of 2,000 pounds, Eckfeldt deposing that the ores so as- 
 sayed were but a fair average of the mines from which they were taken. 
 
 Enough has been done in Colorado to satisfy any one of the true value' 
 of the countless and inexhaustible veins which so closely pack and seam 
 her mountain sides, and the improvements which have been made there in 
 so short a time must appear astonishing to any one who will examine them. 
 
 From the London Mining Journal, October 22, 1869. 
 
 The first ten tons of silver ore shipped to England by the Terrible Mining 
 Company of Georgetown, Colorado, U. S. A., has been received at the 
 British and Colorado Mining Bureau, London. We learn that the assay 
 value of the ore was forty per cent, of lead and four hundred and ninety- 
 six ounces of silver to the ton, which is expected to yield a profit, after 
 payment of all expenses (mining included) of about <90 per ton, or 900 
 on the shipment. 
 
13 
 
 From the New York Herald. 
 
 DENVER, COL., November 15, 1869. 
 
 The gold and silver mines of Colorado are extensively rich in the pre- 
 cious metals. As I have heretofore remarked, they won the prize at the 
 Paris Exposition. Accurate assays of certain specimens show that they 
 represent an intrinsic value of from under $100 to over $10,000 to the ton, 
 lying blocked in the recesses of the mine. 
 
 A visit to the gold and silver mines, and an examination of the ores, is 
 sufficient to show any one that enormous wealth lies buried in these moun- 
 tains. 
 
 Georgetown is the silver center. It has the royal soubriquet of Silver 
 Queen. It is situate near the head of the south branch of Clear Creek, at 
 the base of the snowy range, abont fifty miles from Denver. Stages run 
 to and fro daily, except Sunday. 
 
 Georgetown, already large, is gradually growing, and for a mining town 
 is wonderful. It has an appearance of stability eminently Coloradian. 
 
 Some of the mines are very near the town on the hill slopes which en- 
 close it and others are from one mile to several miles away. Some of the 
 reduction works are situate at the mines and others in the town, while in 
 other instances the ores are merely hand- dressed, put into bags or boxes 
 and sent to the East or shipped to Europe to be reduced. 
 
 I visited most of the principal mines and mills in the Georgetown region. 
 The characteristic mineral of the locality is zinc blende, associated with, 
 galena and iron pyrites. Many of the crystals are very beautiful. I saw 
 several specimens of the finest ores glittering as they were brought out of 
 the mine, in which native silver was quite abundant. 
 
 The veins, undoubtedly, descend deep into the mountains, and are true 
 fissure veins, whose yield will be inexhaustible, and the ores are richin ruby, 
 brittle and native silver. 
 
 The foregoing statement of facts is sufficient to show 
 that the ore deposits owned by the American Company are 
 inexhaustible in quantity, and rich enough in quality to 
 pay immense profits upon the cost of working. It is the 
 expectation of the Company to commence paying divi- 
 dends upon the entire capital stock as soon as two of its 
 ten mines are opened by the tunnels. 
 
 A small portion of the stock of the Company ($50,000) 
 will be offered for sale on and after March 15, at low rates. 
 Further information can be obtained of A. B. MULLETT, 
 Esq., Treasurer, or of any of the Trustees, or at the Com- 
 pany's Office, No. 324, 4J street, Washington. The 
 proceeds of this amount of stock are appropriated to 
 working the mines. This stock is unassessable, and free 
 from all taxes (including Government) of every nature 
 whatever. 
 
YLORD BROS. Inc. 
 SyrocuM, N.Y. 
 Stockton, Calif.